# SetRayTracingFloatParam

> Adds a command to set a float parameter on a RayTracingShader.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.Rendering](/engine/6000.6/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

## SetRayTracingFloatParam(RayTracingShader, string, float)

Adds a command to set a float parameter on a [RayTracingShader](/engine/6000.6/script-reference/unityengine/rendering/raytracingshader.md).

```csharp
public void SetRayTracingFloatParam(RayTracingShader rayTracingShader, string name, float val)
```

### Parameters

**** (\[RayTracingShader]\(/engine/6000.6/script-reference/unityengine/rendering/raytracingshader)): [RayTracingShader](/engine/6000.6/script-reference/unityengine/rendering/raytracingshader.md) to set parameter for.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): Name of the variable in shader code.**** (\[float]\(https\://learn.microsoft.com/dotnet/api/system.single)): Value to set.

### Remarks

Only shaders defined in the .raytrace file can access the float value you designate as the argument for this method. To make this float value accessible to all ray tracing shader types (closest hit, any hit, or miss, for example), call the [CommandBuffer.SetGlobalFloat](/engine/6000.6/script-reference/unityengine/rendering/commandbuffer/setglobalfloat.md) method instead.

## SetRayTracingFloatParam(RayTracingShader, int, float)

Adds a command to set a float parameter on a [RayTracingShader](/engine/6000.6/script-reference/unityengine/rendering/raytracingshader.md).

```csharp
public void SetRayTracingFloatParam(RayTracingShader rayTracingShader, int nameID, float val)
```

### Parameters

**** (\[RayTracingShader]\(/engine/6000.6/script-reference/unityengine/rendering/raytracingshader)): [RayTracingShader](/engine/6000.6/script-reference/unityengine/rendering/raytracingshader.md) to set parameter for.**** (\[int]\(https\://learn.microsoft.com/dotnet/api/system.int32)): Property name ID. Use [Shader.PropertyToID](/engine/6000.6/script-reference/unityengine/shader/propertytoid.md) to get this ID.**** (\[float]\(https\://learn.microsoft.com/dotnet/api/system.single)): Value to set.

### Remarks

Only shaders defined in the .raytrace file can access the float value you designate as the argument for this method. To make this float value accessible to all ray tracing shader types (closest hit, any hit, or miss, for example), call the [CommandBuffer.SetGlobalFloat](/engine/6000.6/script-reference/unityengine/rendering/commandbuffer/setglobalfloat.md) method instead.